Alan McPherson, "Herbert Hoover, Occupation Withdrawal, and the Good Neighbor Policy." Presidential Studies Quarterly 44.4 (2014): 623–639. onlineنسخة محفوظة 2020-05-06 في Wayback Machine[وصلة مكسورة]
Alan McPherson, "Herbert Hoover, Occupation Withdrawal, and the Good Neighbor Policy." Presidential Studies Quarterly 44.4 (2014): 623–639. onlineنسخة محفوظة 2020-05-06 في Wayback Machine[وصلة مكسورة]